How Long Can Fertilizer Sit on a Yard With Water?

How Long Can Fertilizer Sit on a Yard With Water?

The last thing you need is for the fertilizer that was supposed to green up your lawn to clean away or cause unsightly burns instead of helping your lawn. Watering your lawn immediately after you apply fertilizer is actually the best way to prevent problems, but in most cases, you are able to wait until the end of the afternoon without risking the health of your lawn.

Time Frame

Fast-acting fertilizers containing ammonium or urea are created using water-soluble incisions which only mix into the soil after they get wet. The best time to water your lawn after applying a dry fertilizer is instantly after you have finished spreading it. If you spread fertilizer when the grass is wet or when the grass gets wet before the fertilizer washes into the dirt, it can harm your lawn. Although the best practice would be to water fertilizer into your lawn immediately after you have implemented it, it is possible to wait up to 24 hours following binder until you water during cool weather or if you are using a slow-release fertilizer. Watering immediately after you distribute fertilizer prevents a number of problems that become worse the more your fertilizer sits on the lawn.

Leaf Burn

Fertilizer that unites water however isn’t washed off of your grass will cause leaf burn. Fog and dew that form in the day and early morning provide enough moisture to combine with the salt from the fertilizer, allowing your grass to absorb it through its blades. Leaf burn may also happen in warm weather following your fertilizer is applied and watered into the soil if your basement is heat stressed. The build up of salt in the soil can cause spots in your lawn to dry out if the grass isn’t watered adequately. Typically your lawn will require 1 inch of irrigation water or rain every week to reduce dehydration.

Volatile Fertilizers

When the air temperature exceeds 85 degrees Fahrenheit, chemicals left over the ground start to volatilize and also the risk of fluid burn increases. This method causes the nitrogen on your fertilizer to escape into the air over a time period. The more your fertilizer stays on the lawn without being forced into the soil, the worse the problem becomes. Volatilization is a relatively slow process, but it is going to start to have a substantial impact on your fertilizer if it is left exposed to the atmosphere for a very long time period.

Fertilizer Runoff

Reasonable amounts of rainfall can clean fertilizer into the soil, but a heavy rain as soon as you have applied fertilizer can clean it off your lawn instead of mixing it into the dirt. If you leave fertilizer sitting on your lawn without watering it into the dirt for a period of days, you put yourself at risk of losing some or all of your fertilizer to the very first heavy rain that strikes your lawn. In addition to wasting your time and money, this runoff can pollute nearby waterways.

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